dev02ali

This plugin remove extra p and br tags from the_content.

Remove empty p tag

This plugin remove extra p and br tags from the_content and the_excerpt.

binary-organic

With this plugin installed, you can say goodby to automatic and unwanted paragraph tags, your markup can stay beautiful, and never again will you have to wonder why there are line breaks where none should be.
Github: https://github.com/binaryorganic/Disable-Automatic-P-Tags

Disable Automatic P Tags

Disables the Wordpress "feature" that injects paragraph tags into double line breaks.

Remove empty p tag vs Disable Automatic P Tags